Authors: Ju Dong ShiYue Su
Publish Date: 2008/12/24
Volume: 129, Issue: 1-3, Pages: 88-93
Abstract
This present study was undertaken to investigate whether arsenic exposure increases the risk of children’s low intelligence quotient IQ in China MEDLINE SCI CNKI and CBM search were organized for all documents published in English and Chinese between 1988 and 2008 using the following keywords arsenic intelligence and IQ As a result four crosssectional studies that assessed the development of low IQ in children who had been exposed to arsenic earlier in their life were included in this study The summary weighted mean difference of IQ was calculated in this metaanalyses when arsenicosis areas or slight arsenicosis areas were compared with nonarsenicosis areas it is −685 95 confidence interval CI = −830 to −541 p 001 using a fixed effect model and −654 95CI = −893 to −415 p 001 using a random effect model which means that children who live in an arsenicosis area or a slight arsenicosis area have lower IQ than those who live in a nonarsenicosis area and there may be a strong association between arsenic and children’s intelligence
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